ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The thickness of water film is an important parameter in the field of chemical industry.Water film is formed by the flowing water, which flows through a narrow channel. So it is difficultto use contact gauges to measure the water film because it’s flowing so fast that if it is touched, thethickness will be changed. A low-cost and high precision non-contact measurementmethod—capacitive sensor is used as the sensor of the thickness of water film, virtual instrument isused to analyze the measurement state. In contrast to the conventional stand-alone instruments, aPC based virtual instrument for the measurement of water film is proposed in this paper. Based onon-line measurement theory, real time voltages should be collected to PC. These voltages will becomputed by formulas in Labview and the real time data of thickness will be plotted on the screen.If bad signal got, it will give error alarm. The method of the measurement of water film can save alot of fees of research and applications, and be easy to apply in other measurement and controlfields. The basic principle and working process of capacitive micrometer, denoise method, themethod of capacitive calibration, virtual instrument data acquisition system and on-linemeasurement of water film, will be further discussed in this paper
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.381-382.157.pdf
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